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Advice on asyncio and Tornado
aryan patel
Python Developer at Fyers Securities · | 1 upvotes · 2.9K views
Needs advice

I want to use Redis non-blocking with Tornado. How I should use the Redis code using tornadis to achieve max number of connections. I had used the tornadis and with WebSocket handler, I inherited the Redis based pub/sub client inside a class and in the main loop we created the instance of a class. but it decreases the numbr of connections with a huge amount. how we should configure?

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Attila Fulop
Management Advisor at artkonekt · | 3 upvotes · 1.8K views

If there is a way to connect to Redis via UNIX sockets instead of TCP then it worth it to switch over. We had a busy e-commerce site with heavy Redis usage and we saw a 4-5x(!) performance improvement during testing situations with a high number of concurrent requests.

I know that the probability these days is rather low to have such a scenario where you have Redis and the app on the same host (and thus the ability to connect over UNIX sockets). But if that's the case, it's definitely worth it.

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Pros of asyncio
Pros of Tornado
  • 4
    Cooperative Multitasking
  • 4
    I/O Wait
  • 3
    Network Call
  • 2
    I/O bound computation
  • 37
    Open source
  • 31
    So fast
  • 27
    Great for microservices architecture
  • 20
  • 17
  • 14
  • 11
  • 7
  • 3
    Handles well persistent connexions

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Cons of asyncio
Cons of Tornado
    Be the first to leave a con
    • 2
      Event loop is complicated

    Sign up to add or upvote consMake informed product decisions

    - No public GitHub repository available -

    What is asyncio?

    This module provides infrastructure for writing single-threaded concurrent code using coroutines, multiplexing I/O access over sockets and other resources, running network clients and servers, and other related primitives.

    What is Tornado?

    By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived connection to each user.

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    What tools integrate with asyncio?
    What tools integrate with Tornado?
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      Blog Posts

      What are some alternatives to asyncio and Tornado?
      Flask is intended for getting started very quickly and was developed with best intentions in mind.
      Celery is an asynchronous task queue/job queue based on distributed message passing. It is focused on real-time operation, but supports scheduling as well.
      It is a coroutine -based Python networking library that uses greenlet to provide a high-level synchronous API on top of the libev or libuv event loop.
      Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
      Twisted is an event-driven networking engine written in Python and licensed under the open source ​MIT license. Twisted runs on Python 2 and an ever growing subset also works with Python 3. Twisted also supports many common network protocols, including SMTP, POP3, IMAP, SSHv2, and DNS.
      See all alternatives